Condensed Consolidated Statements of Shareholders' Equity and Mezzanine Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Shares	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Beginning balance, shares (in shares) at Jun. 30, 2020				105,916						(13,356)
Beginning balance at Jun. 30, 2020	$ 2,076,803			$ 1,486,947			$ (87,383)	$ 876,552		$ (199,313)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)				(575)						(120)
Share-based and deferred compensation activities	11,266			$ 16,764						$ (5,498)
Shares issued (in shares)				10,698		2,300
Shares issued in underwritten public offering	883,908			$ 438,589		$ 445,319
Net Earnings	46,266							46,266
Foreign currency translation adjustments	35,524						35,524
Change in fair value of interest rate swap, net of taxes	(555)						(555)
Dividends	(6,535)							(6,535)
Ending balance, shares (in shares) at Sep. 30, 2020				117,189		2,300				(13,476)
Ending balance at Sep. 30, 2020	3,046,677			$ 1,942,300		$ 445,319	(52,414)	916,283		$ (204,811)
Beginning balance, shares (in shares) at Jun. 30, 2020				105,916						(13,356)
Beginning balance at Jun. 30, 2020	2,076,803			$ 1,486,947			(87,383)	876,552		$ (199,313)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	134,166
Foreign currency translation adjustments	99,591
Change in fair value of interest rate swap, net of taxes	2,299
Ending balance, shares (in shares) at Dec. 31, 2020				118,043		2,300				(13,487)
Ending balance at Dec. 31, 2020	3,236,813			$ 1,985,833		$ 445,319	14,507	997,283		$ (206,129)
Beginning balance, shares (in shares) at Sep. 30, 2020				117,189		2,300				(13,476)
Beginning balance at Sep. 30, 2020	3,046,677			$ 1,942,300		$ 445,319	(52,414)	916,283		$ (204,811)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)				(854)						(11)
Share-based and deferred compensation activities	(42,215)			$ 43,533						$ (1,318)
Net Earnings	87,900							87,900
Foreign currency translation adjustments	64,067						64,067
Change in fair value of interest rate swap, net of taxes	2,854						2,854
Dividends	(6,900)							(6,900)
Ending balance, shares (in shares) at Dec. 31, 2020				118,043		2,300				(13,487)
Ending balance at Dec. 31, 2020	3,236,813			$ 1,985,833		$ 445,319	14,507	997,283		$ (206,129)
Beginning balance, shares (in shares) at Jun. 30, 2021				119,127		2,300				(13,640)
Beginning balance at Jun. 30, 2021	3,406,170	$ (11,472)		$ 2,028,273	$ (56,388)	$ 445,319	14,267	1,136,777	$ 44,916	$ (218,466)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)				(844)						(200)
Share-based and deferred compensation activities	(17,632)			$ 30,567						$ (12,935)
Net Earnings	74,464							74,464
Foreign currency translation adjustments	(14,381)						(14,381)
Change in fair value of interest rate swap, net of taxes	2,681						2,681
Accretion to redemption value of Series B shares issued in March 2021	(478)							(478)
Dividends	(16,604)							(16,604)
Ending balance, shares (in shares) at Sep. 30, 2021				119,971		2,300				(13,840)
Ending balance at Sep. 30, 2021	3,458,012			$ 2,002,452		$ 445,319	2,567	1,239,075		$ (231,401)
Beginning balance (in shares) at Jun. 30, 2021			75
Beginning balance at Jun. 30, 2021	726,178		$ 726,178
Mezzanine Equity
Accretion to redemption value of Series B shares issued in March 2021			478
Dividends			$ 9,704
Ending balance (in shares) at Sep. 30, 2021			75
Ending balance at Sep. 30, 2021			$ 736,360
Beginning balance, shares (in shares) at Jun. 30, 2021				119,127		2,300				(13,640)
Beginning balance at Jun. 30, 2021	3,406,170	$ (11,472)		$ 2,028,273	$ (56,388)	$ 445,319	14,267	1,136,777	$ 44,916	$ (218,466)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	142,121
Foreign currency translation adjustments	(11,788)
Change in fair value of interest rate swap, net of taxes	12,591
Ending balance, shares (in shares) at Dec. 31, 2021				120,053		2,300				(13,853)
Ending balance at Dec. 31, 2021	3,537,413			$ 2,019,306		$ 445,319	15,070	1,289,925		$ (232,207)
Beginning balance (in shares) at Jun. 30, 2021			75
Beginning balance at Jun. 30, 2021	726,178		$ 726,178
Ending balance (in shares) at Dec. 31, 2021			75
Ending balance at Dec. 31, 2021	746,163		$ 746,163
Beginning balance, shares (in shares) at Sep. 30, 2021				119,971		2,300				(13,840)
Beginning balance at Sep. 30, 2021	3,458,012			$ 2,002,452		$ 445,319	2,567	1,239,075		$ (231,401)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)				(82)						(13)
Share-based and deferred compensation activities	(16,048)			$ 16,854						$ (806)
Net Earnings	67,657							67,657
Foreign currency translation adjustments	2,593						2,593
Change in fair value of interest rate swap, net of taxes	9,910						9,910
Accretion to redemption value of Series B shares issued in March 2021	(496)							(496)
Dividends	(16,311)							(16,311)
Ending balance, shares (in shares) at Dec. 31, 2021				120,053		2,300				(13,853)
Ending balance at Dec. 31, 2021	3,537,413			$ 2,019,306		$ 445,319	$ 15,070	$ 1,289,925		$ (232,207)
Beginning balance (in shares) at Sep. 30, 2021			75
Beginning balance at Sep. 30, 2021			$ 736,360
Mezzanine Equity
Accretion to redemption value of Series B shares issued in March 2021			496
Dividends			$ 9,307
Ending balance (in shares) at Dec. 31, 2021			75
Ending balance at Dec. 31, 2021	$ 746,163		$ 746,163